The current page of Data Types of the pyarrow documentation has a list of the different objects and types that you can use to build custom pyarrow schema. For a lot of them is possible to click in the white box around the module/object name and access a detailed description of the module/object. This is true for almost all the items but for field and schema it's not possible to access the detailed description althoug the corresponding URL (replacing the datatype for a known link with these examples) exists.
Not sure if this is a bug or this boxes should point to another page but if not I think they should point to the correspoding detailed descriptions.
Sample Type Int 32: https://arrow.apache.org/docs/python/generated/pyarrow.int32.html#pyarrow.int32